TclPro boosts Tcl programmers' productivity with a code checker and a powerful graphical debugger. TclPro also makes it easy to package and distribute Tcl applications, and it protects source code from copying and alterations. TclPro incorporates several popular open source extensions with Tcl/Tk: [incr Tcl], for object-oriented programming; Expect, for automating repetitive tasks and extending the lifecycle of legacy applications; and TclX, for added powerful utilities and system support. ActiveState Tcl Dev Kit: Create and deploy professional Tcl applications TclPro started as a commercial product sold by Scriptics, but following its acquisition by Interwoven, it was made open source. ActiveState continued commercial development on TclPro, releasing Tcl Dev Kit, now at 3.1. It raises the bar of Tcl programming tools to a new level with updates or enhanced replacements of every original TclPro tool, and several new tools to boost programmer productivity. See the extensive list of features and a comparison with TclPro that shows how extensive the Tcl Dev Kit is.